Patience (or forbearing) is the state of endurance under difficult circumstances, which can mean persevering in the face of delay or provocation without acting on negative annoyance/anger; or exhibiting forbearance when under strain, especially when faced with longer-term difficulties.
Patience is a person's ability to wait something out or endure something tedious, without getting riled up. It takes a lot of patience to wait for your braces to come off, to deal with a toddler's temper tantrum, or to build a house out of toothpicks.